EP0247913B1 - Hydraulischer Kraftverstärker - Google Patents

Hydraulischer Kraftverstärker Download PDF

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Publication number
EP0247913B1
EP0247913B1 EP87400946A EP87400946A EP0247913B1 EP 0247913 B1 EP0247913 B1 EP 0247913B1 EP 87400946 A EP87400946 A EP 87400946A EP 87400946 A EP87400946 A EP 87400946A EP 0247913 B1 EP0247913 B1 EP 0247913B1
Authority
EP
European Patent Office
Prior art keywords
piston
une
deuxième
dans
premier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP87400946A
Other languages
English (en)
French (fr)
Other versions
EP0247913A1 (de
Inventor
Roland Levrai
Pascal Picot
Christian Riquart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bendix France SA
Original Assignee
Bendix France SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bendix France SA filed Critical Bendix France SA
Publication of EP0247913A1 publication Critical patent/EP0247913A1/de
Application granted granted Critical
Publication of EP0247913B1 publication Critical patent/EP0247913B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/141—Systems with distributor valve

Claims (5)

1. Vorrichtung zur hydraulischen Kraftverstärkung, mit einem eine erste Bohrung (12) umfassenden Körper (10), wobei in der Bohrung ein erster Kolben (34) sowie ein zweiter Kolben (56) gleitend gelagert sind, wobei der erste Kolben (34) unter der Wirkung der Betätigung eines dritten Kolbens (16), welcher in der ersten Bohrung (12) gleitend gelagert ist, verschiebbar ist und der zweite Kolben (56) mittels einer hydrostatischen Verbindung, die in einer Arbeitskammer (60) gebildet ist, verschiebbar ist, welche zwischen dem ersten Kolben (34) und dem zweiten Kolben (56) bestimmt wird, wobei jedem Kolben (34, 56) ein Ventil (52, 58) in einem zugehörigen hydraulischen Kreis zwischen einer Druckfluidquelle (54, 84) und einem zugehörigen Bremskreis (62, 88) zugeordnet ist; sowie mit einer dritten Kammer (30), welche in der ersten Bohrung (12) zwischen dem ersten Kolben (34) und dem dritten Kolben (16) gebildet ist und mit einem Niederdruck-Fluidbehälter (106) über ein Ventil (18, 28) verbunden ist, das nach Beendigung eines bestimmten Hubweges dieses dritten Kolbens (16) schließt, dadurch gekennzeichnet, daß sie eine zweite Bohrung (90) umfaßt, in welcher ein Pilotkolben (92) gleitend gelagert ist, welcher mit einem geschlossenen Ende (94) der zweiten Bohrung (90) eine vierte, mit der dritten Kammer (30) in hydraulischer Verbindung stehenden Kammer (96) bildet, wobei das andere Ende der zweiten Bohrung (90) mit dem Niederdruck-Fluidbehälter (106) über ein Ventil (98, 110) in hydraulischer Verbindung steht, das in Abhängigkeit von dem Fluiddruck der Druckfluidquelle gesteuert wird, wobei dieser Pilotkolben (92) unter der Wirkung des Druckes in der dritten Kammer (30) entgegen einer ersten Feder (102; 140, 144) verschiebbar ist.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie ferner eine zweite Feder (26; 140, 142) umfaßt, welche so angeordnet ist, daß sie den Verschiebungen des dritten Kolbens (16) sowie des Pilotkolbens (92) entgegenwirkt.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die zweite Feder (26) in der ersten Kammer (30) angebracht ist.
4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die zweite Feder (140, 142) in der zweiten Bohrung angebracht ist.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die zweite Feder (140) so angeordnet ist, daß sie nach einer bestimmten Verschiebung des Pilotkolbens (92) inaktiviert wird.
EP87400946A 1986-05-28 1987-04-23 Hydraulischer Kraftverstärker Expired EP0247913B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8607619 1986-05-28
FR8607619A FR2599323B1 (fr) 1986-05-28 1986-05-28 Dispositif d'assistance hydraulique.

Publications (2)

Publication Number Publication Date
EP0247913A1 EP0247913A1 (de) 1987-12-02
EP0247913B1 true EP0247913B1 (de) 1989-08-30

Family

ID=9335727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400946A Expired EP0247913B1 (de) 1986-05-28 1987-04-23 Hydraulischer Kraftverstärker

Country Status (8)

Country Link
US (1) US4798127A (de)
EP (1) EP0247913B1 (de)
JP (1) JPS62283052A (de)
KR (1) KR870010992A (de)
AU (1) AU598262B2 (de)
DE (1) DE3760496D1 (de)
ES (1) ES2010707B3 (de)
FR (1) FR2599323B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2740221B2 (ja) * 1988-12-28 1998-04-15 曙ブレーキ工業株式会社 ブレーキ液圧制御装置
JPH0345459A (ja) * 1989-07-14 1991-02-27 Nissin Kogyo Kk 流体圧倍力装置
KR100881996B1 (ko) * 2007-11-14 2009-02-05 신진정밀(주) 플로우 컨트롤이 가능한 유압 부스터 타입 브레이크 밸브

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164591C3 (de) * 1971-12-24 1979-06-21 Alfred Teves Gmbh, 6000 Frankfurt Zweikreis-Hauptzylinder für eine Druckspeicher-Bremsanlage, insbesondere für Kraftfahrzeuge
JPS5520897B2 (de) * 1973-04-17 1980-06-05
DE2744408A1 (de) * 1977-10-03 1979-04-05 Teves Gmbh Alfred Bremskraftverstaerker
DE2818533C2 (de) * 1978-04-27 1986-11-06 Alfred Teves Gmbh, 6000 Frankfurt Bremsventil
FR2457202A1 (fr) * 1979-05-21 1980-12-19 Ferodo Sa Commande hydraulique notamment pour un dispositif de freinage de vehicule automobile
FR2558785B1 (fr) * 1984-01-31 1986-05-30 Dba Dispositif d'assistance hydraulique
DE3422156A1 (de) * 1984-06-14 1985-12-19 Alfred Teves Gmbh, 6000 Frankfurt Hydraulische servofahrzeugbremse
US4671168A (en) * 1985-02-27 1987-06-09 Bendix France Single actuator tandem brake pressure control valve

Also Published As

Publication number Publication date
FR2599323A1 (fr) 1987-12-04
EP0247913A1 (de) 1987-12-02
AU598262B2 (en) 1990-06-21
DE3760496D1 (en) 1989-10-05
KR870010992A (ko) 1987-12-19
FR2599323B1 (fr) 1988-08-05
US4798127A (en) 1989-01-17
AU7320287A (en) 1987-12-03
ES2010707B3 (es) 1989-12-01
JPS62283052A (ja) 1987-12-08

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